So I've had limited contact with black people (from a relationship status viewpoint). However....
I have had contact / relations with three total. The first - my God, I would have married him if he hadn't been attached at the time. Just a perfect gentleman. We were both the same height, build, and "size." He was VERY intelligent, and outgoing. We did "do the deed" and it was mind-blowing. However, it was a one time hookup, and he had a BF as did I. Later he moved away.
The second, was a quick hookup. A VERY sweet guy, a little heavy, but his personality had me hooked. He was a bottom, and I was MUCH larger (cock-wise) than he was. We had a LOT of fun, but he moved away.
The third was creepy. He was a nice enough fellow. I took him on ONE date. ONE - no penetrative sex - we both jerked off. A week later he showed up at my house and wanted to move in. I gently turned him away. Another week went by - same thing. I finally had to get harsh and turned him away and told him not to come back.
Last I heard of him, he did the same to two other guys and moved away.
If he hadn't been as desperate I probably would have formed a deep relationship with him.
The last was great. I mentioned him in another thread. A straight guy who is / was a great friend (I haven't seen him in a long while). We got along wonderfully. I wish we still hung out. Ah well.
So to sum it up - its always personality before anything else. Some people are wonderful, and some - regardless of skin color - you just can't do anything with.